Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16699531513b586…

MALICIOUS

PDF

49.9 KB Created: 2020-08-22 11:49:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 98335409db425c8ddb44d2483b8a3876 SHA-1: 8dd6c5ec54f785616ba842ba5bba5f403f3f9cfd SHA-256: e16699531513b58645949fa9a4c3b57c3cd858f30bedf4a1834be0206956c401
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=best+astrology+software+in+tamil+free'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document also contains a large number of embedded links, many hosted on Shopify, which is flagged as a PDF link farm. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=best+astrology+software+in+tamil+free In PDF document text
    • http://ruxigo.pmsmachinery.us/uploads/1/3/0/7/130739227/lisogekaguw_tijivuvugun_dazoxakavimaz_zilizadofevenil.pdfIn PDF document text
    • http://tufokus.nathanddavis.com/uploads/1/3/2/7/132712615/9825107.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9746/3714/files/20543280399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/nofolozidotizijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0336/9878/files/google_html_to_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0122/8951/files/88182692262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0324/7781/files/tagovarukobamojeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/tumaczenie_zda_angielski.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1605/1096/files/helping_and_linking_verbs_worksheet_4th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/quotations_from_chairman_mao_tse_tung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7333/8533/files/top_answers_in_an_interview.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/67874951168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7595/2030/files/588540539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8228/4194/files/28227094746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/2019_construction_company_profile.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: aim4theworld.org 4 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 5328 bytes
SHA-256: 6fae1ef6ecba8ad77daf613fbb2e412f6031c774f50c7cb329a45f5c1f643f23
font_01_sfnt_off0000752d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x752D 2896 bytes
SHA-256: 148388f0f4f2dcb04172db08f7d1f952da016c6e9e7a78ad4ffa63bfffe27651
font_02_sfnt_off00008157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 10396 bytes
SHA-256: 91d123170cbdcb474c874b046cb3f5c8490f85ad57819a7c326a5913123a11ff
font_03_sfnt_off0000a4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F5 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073